Medium

ZenML is vulnerable to Path Traversal through its `PathMaterializer` class

Disclosed: 05.10.2025
Updated: 11.10.2026 13:19

ZenML version 0.83.1 is affected by a path traversal vulnerability in the PathMaterializer class. The load function uses is_path_within_directory to validate files during data.tar.gz extraction, which fails to effectively detect symbolic and hard links. This vulnerability can lead to arbitrary file writes, potentially resulting in arbitrary command execution if critical files are overwritten.

Affected software

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Platform	Package	Vulnerable versions	Fixed in
Python (PyPI)	zenml	>= 0.81.0, < 0.84.2	0.84.2

References

CVSS score 6.3/10

CVSS vector: CVSS:3.0/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-22
Platform: Python (PyPI)
Package: zenml
Disclosed: 05.10.2025
Updated: 11.10.2026 13:19

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2026-2071 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-q92x-2x5g-h365 - CC BY 4.0

Vulnerability history: zenml

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (14) in the archive

Total entries: 14
First → latest: 02.2024 10.2025
Without a fix: 1
Exploited in attacks: 0

Severity breakdown

Critical 1
High 2
Medium 8
Low 3

Disclosures per year

2024: 12
2025: 2
2026: 0

05.10.2025

ZenML is vulnerable to Path Traversal through its `PathMaterializer` class this entry

Medium · 6.3 CVE-2025-8406 >= 0.81.0, < 0.84.2 0.84.2
20.03.2025

A Denial of Service (DoS) vulnerability in zenml-io/zenml version 0.66.0 allows unauthenticated attackers to cause excessive resource consumption by sending malformed multipart requests with arbitrary

High · 7.5 CVE-2024-9340 < 0.68.0 0.68.0
16.04.2024

A directory traversal vulnerability exists in the zenml-io/zenml repository, specifically within the /api/v1/steps endpoint. Attackers can exploit this vulnerability by manipulating the 'logs' URI pat

Critical · 9.9 CVE-2024-2083 < 0.55.5 0.55.5
27.02.2024

ZenML Server Remote Privilege Escalation Vulnerability

High · 6.5 CVE-2024-25723 < 0.42.2, >= 0.43.0, < 0.43.1, >= 0.45.0, < 0.46.7, >= 0.44.0, < 0.44.4 0.42.2, 0.43.1, 0.46.7, 0.44.4

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